Cyclones

Cyclones are a type of Air Pollution Control Equipment (APC) that capture and separate emissions using centripetal force. Unlike baghouses, cyclones do not have fabric or filters, but rather separate large particles from small particles using a vortex force. Cyclones are often used in woodworking shops to remove dust from air, but cyclone technology can also be used to remove particles from gas or liquid media.

Who Needs a Permit?

All Operations if they have the potential to emit 2 or more pounds per day, pursuant to Rule 201, section 122.

Woodworking operations venting a sanding process if the exhaust flow rate is greater than or equal to 750 cfm³.

Woodworking operations venting a combined processes vented to a common cyclone require a permit if exhaust flow rate 3,400 cfm³.

Permit Fees

New Installations:

Use Schedule 1 of fee rule (see Rule 301, section 308.2). Fees are based on the size of the electric motor on the device. Use the Initial Permit Fee column for new installations or equipment not previously permitted.

Modifications:

For modifications of permitted equipment resulting in an increase in rating, the fee is assessed in accordance with fee schedule 1 (see Rule 301, section 308.2) based on the incremental increase in rating.

For modifications resulting in no increase in rating, the fee shall be based on Rule 301 section 306.2.

Equipment Installed Without an Authority to Construct:

As per Section 302.1 of Rule 301, any person installing/operating regulated equipment without obtaining a permit from the Sac Metro Air District first, will be required to pay permit renewal back fees for each year of unpermitted operation, to a maximum of 3 years, in addition to the initial permit fee.

Permit Application Completeness Determination

An application will not be accepted for processing until it is deemed complete. The following will be required in order for the Sac Metro Air District to make a completeness determination.

Completed application Forms G100, G101, CY100 and HRA100 with the original signature of the owner/proprietor or responsible officer of the company.